trunk/src/ircd.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2014 ircd-hybrid development team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 */

/*! \file ircd.c
 * \brief Starts up and runs the ircd.
 * \version $Id$
 */

#include "stdinc.h"
#include "user.h"
#include "list.h"
#include "ircd.h"
#include "channel.h"
#include "client.h"
#include "event.h"
#include "fdlist.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd_signal.h"
#include "gline.h"
#include "motd.h"
#include "conf.h"
#include "hostmask.h"
#include "parse.h"
#include "res.h"
#include "restart.h"
#include "rng_mt.h"
#include "auth.h"
#include "s_bsd.h"
#include "log.h"
#include "server.h"      /* try_connections */
#include "send.h"
#include "whowas.h"
#include "modules.h"
#include "memory.h"
#include "mempool.h"
#include "ircd_getopt.h"
#include "supported.h"
#include "watch.h"
#include "conf_db.h"
#include "conf_class.h"


#ifdef HAVE_LIBGEOIP
GeoIP *geoip_ctx;
#endif

/* /quote set variables */
struct SetOptions GlobalSetOptions;
struct Counter Count;
struct ServerState_t server_state;
struct ServerStatistics ServerStats;
struct timeval SystemTime;
struct Client me;             /* That's me */
struct LocalUser meLocalUser; /* That's also part of me */

const char *logFileName = LPATH;
const char *pidFileName = PPATH;

char **myargv;

int dorehash = 0;
int doremotd = 0;

/* Set to zero because it should be initialized later using
 * initialize_server_capabs
 */
unsigned int default_server_capabs;
unsigned int splitmode;
unsigned int splitchecking;
unsigned int split_users;
unsigned int split_servers;

/* Do klines the same way hybrid-6 did them, i.e. at the
 * top of the next io_loop instead of in the same loop as
 * the klines are being applied.
 *
 * This should fix strange CPU starvation as very indirectly reported.
 * (Why do you people not email bug reports? WHY? WHY?)
 *
 * - Dianora
 */

int rehashed_klines = 0;


/*
 * print_startup - print startup information
 */
static void
print_startup(int pid)
{
  printf("ircd: version %s(%s)\n", ircd_version, serno);
  printf("ircd: pid %d\n", pid);
  printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
         : "foreground", ConfigFileEntry.dpath);
}

static void
make_daemon(void)
{
  int pid;

  if ((pid = fork()) < 0)
  {
    perror("fork");
    exit(EXIT_FAILURE);
  }
  else if (pid > 0)
  {
    print_startup(pid);
    exit(EXIT_SUCCESS);
  }

  setsid();
}

static int printVersion = 0;

static struct lgetopt myopts[] =
{
  {"configfile", &ConfigFileEntry.configfile,
   STRING, "File to use for ircd.conf"},
  {"glinefile",  &ConfigFileEntry.glinefile,
   STRING, "File to use for gline database"},
  {"klinefile",  &ConfigFileEntry.klinefile,
   STRING, "File to use for kline database"},
  {"dlinefile",  &ConfigFileEntry.dlinefile,
   STRING, "File to use for dline database"},
  {"xlinefile",  &ConfigFileEntry.xlinefile,
   STRING, "File to use for xline database"},
  {"resvfile",  &ConfigFileEntry.resvfile,
   STRING, "File to use for resv database"},
  {"logfile",    &logFileName,
   STRING, "File to use for ircd.log"},
  {"pidfile",    &pidFileName,
   STRING, "File to use for process ID"},
  {"foreground", &server_state.foreground,
   YESNO, "Run in foreground (don't detach)"},
  {"version",    &printVersion,
   YESNO, "Print version and exit"},
  {"help", NULL, USAGE, "Print this text"},
  {NULL, NULL, STRING, NULL},
};

void
set_time(void)
{
  struct timeval newtime = { .tv_sec = 0, .tv_usec = 0 };

  if (gettimeofday(&newtime, NULL) == -1)
  {
    ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
         strerror(errno));
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "Clock Failure (%s), TS can be corrupted",
                         strerror(errno));
    server_die("Clock Failure", 1);
  }

  if (newtime.tv_sec < CurrentTime)
  {
    ilog(LOG_TYPE_IRCD, "System clock is running backwards - (%lu < %lu)",
         (unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
    sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
                         "System clock is running backwards - (%lu < %lu)",
                         (unsigned long)newtime.tv_sec,
                         (unsigned long)CurrentTime);
    set_back_events(CurrentTime - newtime.tv_sec);
  }

  SystemTime.tv_sec  = newtime.tv_sec;
  SystemTime.tv_usec = newtime.tv_usec;
}

static void
io_loop(void)
{
  while (1)
  {
    /*
     * Maybe we want a flags word?
     * ie. if (REHASHED_KLINES(global_flags))
     * SET_REHASHED_KLINES(global_flags)
     * CLEAR_REHASHED_KLINES(global_flags)
     *
     * - Dianora
     */
    if (rehashed_klines)
    {
      check_conf_klines();
      rehashed_klines = 0;
    }

    if (listing_client_list.head)
    {
      dlink_node *ptr = NULL, *ptr_next = NULL;
      DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
        safe_list_channels(ptr->data, 0);
    }

    /* Run pending events, then get the number of seconds to the next
     * event
     */
    while (eventNextTime() <= CurrentTime)
      eventRun();

    comm_select();
    exit_aborted_clients();
    free_exited_clients();

    /* Check to see whether we have to rehash the configuration .. */
    if (dorehash)
    {
      rehash(1);
      dorehash = 0;
    }

    if (doremotd)
    {
      motd_recache();
      sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                           "Got signal SIGUSR1, reloading motd file(s)");
      doremotd = 0;
    }
  }
}

/* initalialize_global_set_options()
 *
 * inputs       - none
 * output       - none
 * side effects - This sets all global set options needed
 */
static void
initialize_global_set_options(void)
{
  memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));

  GlobalSetOptions.autoconn  = 1;
  GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
  GlobalSetOptions.spam_num  = MAX_JOIN_LEAVE_COUNT;

  if (ConfigFileEntry.default_floodcount)
    GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
  else
    GlobalSetOptions.floodcount = 10;

  /* XXX I have no idea what to try here - Dianora */
  GlobalSetOptions.joinfloodcount = 16;
  GlobalSetOptions.joinfloodtime = 8;

  split_servers = ConfigChannel.default_split_server_count;
  split_users   = ConfigChannel.default_split_user_count;

  if (split_users && split_servers && (ConfigChannel.no_create_on_split ||
                                       ConfigChannel.no_join_on_split))
  {
    splitmode     = 1;
    splitchecking = 1;
  }

  GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
  /* End of global set options */
}

/* initialize_server_capabs()
 *
 * inputs       - none
 * output       - none
 */
static void
initialize_server_capabs(void)
{
  add_capability("QS", CAP_QS, 1);
  add_capability("EOB", CAP_EOB, 1);
  add_capability("TS6", CAP_TS6, 0);
  add_capability("CLUSTER", CAP_CLUSTER, 1);
  add_capability("SVS", CAP_SVS, 1);
  add_capability("CHW", CAP_CHW, 1);
  add_capability("HOPS", CAP_HOPS, 1);
}

/* write_pidfile()
 *
 * inputs       - filename+path of pid file
 * output       - NONE
 * side effects - write the pid of the ircd to filename
 */
static void
write_pidfile(const char *filename)
{
  FILE *fb;

  if ((fb = fopen(filename, "w")))
  {
    char buff[IRCD_BUFSIZE];
    unsigned int pid = (unsigned int)getpid();

    snprintf(buff, sizeof(buff), "%u\n", pid);

    if ((fputs(buff, fb) == -1))
      ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
           pid, filename, strerror(errno));

    fclose(fb);
  }
  else
  {
    ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
  }
}

/* check_pidfile()
 *
 * inputs       - filename+path of pid file
 * output       - none
 * side effects - reads pid from pidfile and checks if ircd is in process
 *                list. if it is, gracefully exits
 * -kre
 */
static void
check_pidfile(const char *filename)
{
  FILE *fb;
  char buff[IRCD_BUFSIZE];
  pid_t pidfromfile;

  /* Don't do logging here, since we don't have log() initialised */
  if ((fb = fopen(filename, "r")))
  {
    if (fgets(buff, 20, fb) == NULL)
    {
      /* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
       * strerror(errno));
       */
    }
    else
    {
      pidfromfile = atoi(buff);

      if (!kill(pidfromfile, 0))
      {
        /* log(L_ERROR, "Server is already running"); */
        printf("ircd: daemon is already running\n");
        exit(-1);
      }
    }

    fclose(fb);
  }
  else if (errno != ENOENT)
  {
    /* log(L_ERROR, "Error opening pid file %s", filename); */
  }
}

/* setup_corefile()
 *
 * inputs       - nothing
 * output       - nothing
 * side effects - setups corefile to system limits.
 * -kre
 */
static void
setup_corefile(void)
{
#ifdef HAVE_SYS_RESOURCE_H
  struct rlimit rlim; /* resource limits */

  /* Set corefilesize to maximum */
  if (!getrlimit(RLIMIT_CORE, &rlim))
  {
    rlim.rlim_cur = rlim.rlim_max;
    setrlimit(RLIMIT_CORE, &rlim);
  }
#endif
}

#ifdef HAVE_LIBCRYPTO
static int
always_accept_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
{
  return 1;
}
#endif

/* init_ssl()
 *
 * inputs       - nothing
 * output       - nothing
 * side effects - setups SSL context.
 */
static void
ssl_init(void)
{
#ifdef HAVE_LIBCRYPTO
  const unsigned char session_id[] = "ircd-hybrid";

  SSL_load_error_strings();
  SSLeay_add_ssl_algorithms();

  if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
  {
    const char *s;

    fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
            s = ERR_lib_error_string(ERR_get_error()));
    ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
  }

  SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1);
  SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG|SSL_OP_ALL);
  SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
                     always_accept_verify_cb);
  SSL_CTX_set_session_id_context(ServerInfo.server_ctx, session_id, sizeof(session_id) - 1);

  if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
  {
    const char *s;

    fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
            s = ERR_lib_error_string(ERR_get_error()));
    ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
  }

  SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1);
  SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG|SSL_OP_ALL);
  SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
                     always_accept_verify_cb);
#endif /* HAVE_LIBCRYPTO */
}

int
main(int argc, char *argv[])
{
  /* Check to see if the user is running us as root, which is a nono */
  if (geteuid() == 0)
  {
    fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
    return -1;
  }

  /* Setup corefile size immediately after boot -kre */
  setup_corefile();

  /* save server boot time right away, so getrusage works correctly */
  set_time();

  /* It ain't random, but it ought to be a little harder to guess */
  init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec | (getpid() << 20)));

  me.localClient = &meLocalUser;
  dlinkAdd(&me, &me.node, &global_client_list);  /* Pointer to beginning
                                                   of Client list */
  ConfigFileEntry.dpath      = DPATH;
  ConfigFileEntry.spath      = SPATH;
  ConfigFileEntry.mpath      = MPATH;
  ConfigFileEntry.configfile = CPATH;    /* Server configuration file */
  ConfigFileEntry.klinefile  = KPATH;    /* Server kline file         */
  ConfigFileEntry.glinefile  = GPATH;    /* Server gline file         */
  ConfigFileEntry.xlinefile  = XPATH;    /* Server xline file         */
  ConfigFileEntry.dlinefile  = DLPATH;   /* dline file                */
  ConfigFileEntry.resvfile   = RESVPATH; /* resv file                 */

  myargv = argv;
  umask(077);                /* better safe than sorry --SRB */

  parseargs(&argc, &argv, myopts);

  if (printVersion)
  {
    printf("ircd: version %s(%s)\n", ircd_version, serno);
    exit(EXIT_SUCCESS);
  }

  if (chdir(ConfigFileEntry.dpath))
  {
    perror("chdir");
    exit(EXIT_FAILURE);
  }

  ssl_init();

  if (!server_state.foreground)
  {
    make_daemon();
    close_standard_fds(); /* this needs to be before init_netio()! */
  }
  else
    print_startup(getpid());

  setup_signals();

  /* Init the event subsystem */
  eventInit();

  /* We need this to initialise the fd array before anything else */
  fdlist_init();
  log_set_file(LOG_TYPE_IRCD, 0, logFileName);
  check_can_use_v6();
  init_netio();         /* This needs to be setup early ! -- adrian */

  /* Check if there is pidfile and daemon already running */
  check_pidfile(pidFileName);

  mp_pool_init();
  init_dlink_nodes();
  init_isupport();
  dbuf_init();
  hash_init();
  init_ip_hash_table();      /* client host ip hash table */
  init_host_hash();          /* Host-hashtable. */
  client_init();
  class_init();
  whowas_init();
  watch_init();
  auth_init();          /* Initialise the auth code */
  init_resolver();      /* Needs to be setup before the io loop */
  modules_init();
  read_conf_files(1);   /* cold start init conf files */
  init_uid();
  initialize_server_capabs();   /* Set up default_server_capabs */
  initialize_global_set_options();
  channel_init();
  read_links_file();
  motd_init();
#ifdef HAVE_LIBGEOIP
  geoip_ctx = GeoIP_new(GEOIP_MEMORY_CACHE);
#endif

  if (EmptyString(ServerInfo.sid))
  {
    ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
    exit(EXIT_FAILURE);
  }

  strlcpy(me.id, ServerInfo.sid, sizeof(me.id));

  if (EmptyString(ServerInfo.name))
  {
    ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
    exit(EXIT_FAILURE);
  }

  strlcpy(me.name, ServerInfo.name, sizeof(me.name));

  /* serverinfo{} description must exist.  If not, error out.*/
  if (EmptyString(ServerInfo.description))
  {
    ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
    exit(EXIT_FAILURE);
  }

  strlcpy(me.info, ServerInfo.description, sizeof(me.info));

  me.from                   = &me;
  me.servptr                = &me;
  me.localClient->lasttime  = CurrentTime;
  me.localClient->since     = CurrentTime;
  me.localClient->firsttime = CurrentTime;

  SetMe(&me);
  make_server(&me);

  hash_add_id(&me);
  hash_add_client(&me);

  /* add ourselves to global_serv_list */
  dlinkAdd(&me, make_dlink_node(), &global_serv_list);

  load_kline_database();
  load_dline_database();
  load_gline_database();
  load_xline_database();
  load_resv_database();

  if (chdir(MODPATH))
  {
    ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
    exit(EXIT_FAILURE);
  }

  load_all_modules(1);
  load_conf_modules();
  load_core_modules(1);

  /* Go back to DPATH after checking to see if we can chdir to MODPATH */
  if (chdir(ConfigFileEntry.dpath))
  {
    perror("chdir");
    exit(EXIT_FAILURE);
  }

  /*
   * assemble_umode_buffer() has to be called after
   * reading conf/loading modules.
   */
  assemble_umode_buffer();

  write_pidfile(pidFileName);

  ilog(LOG_TYPE_IRCD, "Server Ready");

  eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
  eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);

  /* We want try_connections to be called as soon as possible now! -- adrian */
  /* No, 'cause after a restart it would cause all sorts of nick collides */
  eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);

  /* Setup the timeout check. I'll shift it later :)  -- adrian */
  eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);

  eventAddIsh("save_all_databases", save_all_databases, NULL, DATABASE_UPDATE_TIMEOUT);

  if (ConfigServerHide.links_delay > 0)
    eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
  else
    ConfigServerHide.links_disabled = 1;

  if (splitmode)
    eventAddIsh("check_splitmode", check_splitmode, NULL, 60);

  io_loop();
  return 0;
}
Revision:	3907
Committed:	Fri Jun 6 23:53:35 2014 UTC (11 years, 2 months ago) by michael
Content type:	text/x-csrc
File size:	17060 byte(s)
Log Message:	- Use 'unsigned' whenever possible
#	User	Rev	Content
1	adx	30	/*
2	michael	2916	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	2916	* Copyright (c) 1997-2014 ircd-hybrid development team
5	adx	30	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19			* USA
20			*/
21
22	michael	2916	/*! \file ircd.c
23			* \brief Starts up and runs the ircd.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	3347	#include "user.h"
29	michael	1011	#include "list.h"
30	adx	30	#include "ircd.h"
31			#include "channel.h"
32			#include "client.h"
33			#include "event.h"
34			#include "fdlist.h"
35			#include "hash.h"
36			#include "irc_string.h"
37			#include "ircd_signal.h"
38	michael	3321	#include "gline.h"
39	adx	30	#include "motd.h"
40	michael	1632	#include "conf.h"
41	adx	30	#include "hostmask.h"
42			#include "parse.h"
43	michael	3322	#include "res.h"
44	adx	30	#include "restart.h"
45	michael	982	#include "rng_mt.h"
46	michael	3324	#include "auth.h"
47	adx	30	#include "s_bsd.h"
48	michael	1309	#include "log.h"
49	michael	3347	#include "server.h" /* try_connections */
50	adx	30	#include "send.h"
51			#include "whowas.h"
52			#include "modules.h"
53			#include "memory.h"
54	michael	1654	#include "mempool.h"
55	adx	30	#include "ircd_getopt.h"
56			#include "supported.h"
57	michael	876	#include "watch.h"
58	michael	1622	#include "conf_db.h"
59	michael	1632	#include "conf_class.h"
60	adx	30
61	michael	1858
62			#ifdef HAVE_LIBGEOIP
63			GeoIP *geoip_ctx;
64			#endif
65	michael	2872
66	adx	30	/* /quote set variables */
67			struct SetOptions GlobalSetOptions;
68	michael	2872	struct Counter Count;
69			struct ServerState_t server_state;
70	michael	896	struct ServerStatistics ServerStats;
71	adx	30	struct timeval SystemTime;
72			struct Client me; /* That's me */
73			struct LocalUser meLocalUser; /* That's also part of me */
74
75			const char *logFileName = LPATH;
76			const char *pidFileName = PPATH;
77
78			char **myargv;
79
80			int dorehash = 0;
81			int doremotd = 0;
82
83			/* Set to zero because it should be initialized later using
84			* initialize_server_capabs
85			*/
86	michael	3907	unsigned int default_server_capabs;
87	michael	1013	unsigned int splitmode;
88			unsigned int splitchecking;
89			unsigned int split_users;
90	adx	30	unsigned int split_servers;
91
92			/* Do klines the same way hybrid-6 did them, i.e. at the
93			* top of the next io_loop instead of in the same loop as
94			* the klines are being applied.
95			*
96			* This should fix strange CPU starvation as very indirectly reported.
97			* (Why do you people not email bug reports? WHY? WHY?)
98			*
99			* - Dianora
100			*/
101
102			int rehashed_klines = 0;
103
104
105			/*
106			* print_startup - print startup information
107			*/
108			static void
109			print_startup(int pid)
110			{
111	michael	2646	printf("ircd: version %s(%s)\n", ircd_version, serno);
112	adx	30	printf("ircd: pid %d\n", pid);
113			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
114			: "foreground", ConfigFileEntry.dpath);
115			}
116
117			static void
118			make_daemon(void)
119			{
120			int pid;
121
122			if ((pid = fork()) < 0)
123			{
124			perror("fork");
125			exit(EXIT_FAILURE);
126			}
127			else if (pid > 0)
128			{
129			print_startup(pid);
130			exit(EXIT_SUCCESS);
131			}
132
133			setsid();
134			}
135
136			static int printVersion = 0;
137
138	michael	3215	static struct lgetopt myopts[] =
139			{
140	michael	2916	{"configfile", &ConfigFileEntry.configfile,
141	adx	30	STRING, "File to use for ircd.conf"},
142	michael	1718	{"glinefile", &ConfigFileEntry.glinefile,
143			STRING, "File to use for gline database"},
144	michael	2916	{"klinefile", &ConfigFileEntry.klinefile,
145	michael	1718	STRING, "File to use for kline database"},
146			{"dlinefile", &ConfigFileEntry.dlinefile,
147			STRING, "File to use for dline database"},
148	michael	2916	{"xlinefile", &ConfigFileEntry.xlinefile,
149	michael	1718	STRING, "File to use for xline database"},
150			{"resvfile", &ConfigFileEntry.resvfile,
151			STRING, "File to use for resv database"},
152	michael	2916	{"logfile", &logFileName,
153	adx	30	STRING, "File to use for ircd.log"},
154			{"pidfile", &pidFileName,
155			STRING, "File to use for process ID"},
156	michael	2916	{"foreground", &server_state.foreground,
157	adx	30	YESNO, "Run in foreground (don't detach)"},
158	michael	2916	{"version", &printVersion,
159	adx	30	YESNO, "Print version and exit"},
160			{"help", NULL, USAGE, "Print this text"},
161			{NULL, NULL, STRING, NULL},
162			};
163
164			void
165			set_time(void)
166			{
167	michael	2978	struct timeval newtime = { .tv_sec = 0, .tv_usec = 0 };
168	adx	30
169			if (gettimeofday(&newtime, NULL) == -1)
170			{
171	michael	1247	ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
172	adx	30	strerror(errno));
173	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
174	adx	30	"Clock Failure (%s), TS can be corrupted",
175			strerror(errno));
176	michael	3167	server_die("Clock Failure", 1);
177	adx	30	}
178
179			if (newtime.tv_sec < CurrentTime)
180			{
181	michael	2980	ilog(LOG_TYPE_IRCD, "System clock is running backwards - (%lu < %lu)",
182			(unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
183			sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
184			"System clock is running backwards - (%lu < %lu)",
185			(unsigned long)newtime.tv_sec,
186			(unsigned long)CurrentTime);
187	adx	30	set_back_events(CurrentTime - newtime.tv_sec);
188			}
189
190			SystemTime.tv_sec = newtime.tv_sec;
191			SystemTime.tv_usec = newtime.tv_usec;
192			}
193
194			static void
195			io_loop(void)
196			{
197	michael	3215	while (1)
198	adx	30	{
199			/*
200			* Maybe we want a flags word?
201	michael	2916	* ie. if (REHASHED_KLINES(global_flags))
202	adx	30	* SET_REHASHED_KLINES(global_flags)
203			* CLEAR_REHASHED_KLINES(global_flags)
204			*
205			* - Dianora
206			*/
207			if (rehashed_klines)
208			{
209			check_conf_klines();
210			rehashed_klines = 0;
211			}
212
213			if (listing_client_list.head)
214			{
215			dlink_node ptr = NULL, ptr_next = NULL;
216			DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
217	michael	3288	safe_list_channels(ptr->data, 0);
218	adx	30	}
219
220			/* Run pending events, then get the number of seconds to the next
221			* event
222			*/
223			while (eventNextTime() <= CurrentTime)
224			eventRun();
225
226			comm_select();
227			exit_aborted_clients();
228			free_exited_clients();
229
230			/* Check to see whether we have to rehash the configuration .. */
231			if (dorehash)
232			{
233			rehash(1);
234			dorehash = 0;
235			}
236	michael	3215
237	adx	30	if (doremotd)
238			{
239	michael	2150	motd_recache();
240	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
241	michael	3065	"Got signal SIGUSR1, reloading motd file(s)");
242	adx	30	doremotd = 0;
243			}
244			}
245			}
246
247			/* initalialize_global_set_options()
248			*
249			* inputs - none
250			* output - none
251	michael	2916	* side effects - This sets all global set options needed
252	adx	30	*/
253			static void
254			initialize_global_set_options(void)
255			{
256			memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
257
258			GlobalSetOptions.autoconn = 1;
259			GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
260			GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
261
262			if (ConfigFileEntry.default_floodcount)
263			GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
264			else
265			GlobalSetOptions.floodcount = 10;
266
267			/* XXX I have no idea what to try here - Dianora */
268			GlobalSetOptions.joinfloodcount = 16;
269			GlobalSetOptions.joinfloodtime = 8;
270
271			split_servers = ConfigChannel.default_split_server_count;
272			split_users = ConfigChannel.default_split_user_count;
273
274			if (split_users && split_servers && (ConfigChannel.no_create_on_split \|\|
275			ConfigChannel.no_join_on_split))
276			{
277			splitmode = 1;
278			splitchecking = 1;
279			}
280
281			GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
282			/* End of global set options */
283			}
284
285			/* initialize_server_capabs()
286			*
287			* inputs - none
288			* output - none
289			*/
290			static void
291			initialize_server_capabs(void)
292			{
293			add_capability("QS", CAP_QS, 1);
294			add_capability("EOB", CAP_EOB, 1);
295	michael	1117	add_capability("TS6", CAP_TS6, 0);
296	adx	30	add_capability("CLUSTER", CAP_CLUSTER, 1);
297	michael	1196	add_capability("SVS", CAP_SVS, 1);
298	michael	3267	add_capability("CHW", CAP_CHW, 1);
299	adx	30	add_capability("HOPS", CAP_HOPS, 1);
300			}
301
302			/* write_pidfile()
303			*
304			* inputs - filename+path of pid file
305			* output - NONE
306			* side effects - write the pid of the ircd to filename
307			*/
308			static void
309			write_pidfile(const char *filename)
310			{
311	michael	1325	FILE *fb;
312	adx	30
313	michael	1325	if ((fb = fopen(filename, "w")))
314	adx	30	{
315	michael	2691	char buff[IRCD_BUFSIZE];
316	adx	30	unsigned int pid = (unsigned int)getpid();
317
318	michael	1325	snprintf(buff, sizeof(buff), "%u\n", pid);
319
320			if ((fputs(buff, fb) == -1))
321	michael	1247	ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
322	adx	30	pid, filename, strerror(errno));
323
324	michael	1325	fclose(fb);
325	adx	30	}
326			else
327			{
328	michael	1247	ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
329	adx	30	}
330			}
331
332			/* check_pidfile()
333			*
334			* inputs - filename+path of pid file
335			* output - none
336			* side effects - reads pid from pidfile and checks if ircd is in process
337			* list. if it is, gracefully exits
338			* -kre
339			*/
340			static void
341			check_pidfile(const char *filename)
342			{
343	michael	1325	FILE *fb;
344	michael	2691	char buff[IRCD_BUFSIZE];
345	adx	30	pid_t pidfromfile;
346
347			/* Don't do logging here, since we don't have log() initialised */
348	michael	1325	if ((fb = fopen(filename, "r")))
349	adx	30	{
350	michael	1325	if (fgets(buff, 20, fb) == NULL)
351	adx	30	{
352			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
353			* strerror(errno));
354			*/
355			}
356			else
357			{
358			pidfromfile = atoi(buff);
359
360			if (!kill(pidfromfile, 0))
361			{
362			/* log(L_ERROR, "Server is already running"); */
363			printf("ircd: daemon is already running\n");
364			exit(-1);
365			}
366			}
367
368	michael	1325	fclose(fb);
369	adx	30	}
370			else if (errno != ENOENT)
371			{
372			/* log(L_ERROR, "Error opening pid file %s", filename); */
373			}
374			}
375
376			/* setup_corefile()
377			*
378			* inputs - nothing
379			* output - nothing
380			* side effects - setups corefile to system limits.
381			* -kre
382			*/
383			static void
384			setup_corefile(void)
385			{
386			#ifdef HAVE_SYS_RESOURCE_H
387			struct rlimit rlim; /* resource limits */
388
389			/* Set corefilesize to maximum */
390			if (!getrlimit(RLIMIT_CORE, &rlim))
391			{
392			rlim.rlim_cur = rlim.rlim_max;
393			setrlimit(RLIMIT_CORE, &rlim);
394			}
395			#endif
396			}
397
398	michael	2228	#ifdef HAVE_LIBCRYPTO
399			static int
400			always_accept_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
401			{
402			return 1;
403			}
404			#endif
405
406	adx	30	/* init_ssl()
407			*
408			* inputs - nothing
409			* output - nothing
410			* side effects - setups SSL context.
411			*/
412			static void
413	michael	1798	ssl_init(void)
414	adx	30	{
415			#ifdef HAVE_LIBCRYPTO
416	michael	2914	const unsigned char session_id[] = "ircd-hybrid";
417
418	adx	30	SSL_load_error_strings();
419			SSLeay_add_ssl_algorithms();
420
421	michael	967	if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
422	adx	30	{
423			const char *s;
424
425	michael	1303	fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
426	adx	30	s = ERR_lib_error_string(ERR_get_error()));
427	michael	1303	ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
428	adx	30	}
429
430	michael	1316	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
431	michael	967	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
432	michael	2228	SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_PEER\|SSL_VERIFY_CLIENT_ONCE,
433			always_accept_verify_cb);
434	michael	2914	SSL_CTX_set_session_id_context(ServerInfo.server_ctx, session_id, sizeof(session_id) - 1);
435	adx	30
436	michael	1303	if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
437			{
438			const char *s;
439
440			fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
441			s = ERR_lib_error_string(ERR_get_error()));
442			ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
443			}
444
445	michael	1316	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
446	michael	1303	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
447	michael	2253	SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_PEER\|SSL_VERIFY_CLIENT_ONCE,
448	michael	2228	always_accept_verify_cb);
449	adx	30	#endif /* HAVE_LIBCRYPTO */
450			}
451
452			int
453			main(int argc, char *argv[])
454			{
455	michael	2253	/* Check to see if the user is running us as root, which is a nono */
456	adx	30	if (geteuid() == 0)
457			{
458	michael	3525	fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
459	michael	982	return -1;
460	adx	30	}
461
462			/* Setup corefile size immediately after boot -kre */
463			setup_corefile();
464
465			/* save server boot time right away, so getrusage works correctly */
466			set_time();
467
468	michael	982	/* It ain't random, but it ought to be a little harder to guess */
469			init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
470
471	adx	30	me.localClient = &meLocalUser;
472	michael	2253	dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
473	adx	30	of Client list */
474			ConfigFileEntry.dpath = DPATH;
475	michael	3239	ConfigFileEntry.spath = SPATH;
476			ConfigFileEntry.mpath = MPATH;
477	michael	1702	ConfigFileEntry.configfile = CPATH; /* Server configuration file */
478			ConfigFileEntry.klinefile = KPATH; /* Server kline file */
479	michael	1718	ConfigFileEntry.glinefile = GPATH; /* Server gline file */
480	michael	1702	ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
481			ConfigFileEntry.dlinefile = DLPATH; /* dline file */
482			ConfigFileEntry.resvfile = RESVPATH; /* resv file */
483
484	adx	30	myargv = argv;
485			umask(077); /* better safe than sorry --SRB */
486
487			parseargs(&argc, &argv, myopts);
488
489			if (printVersion)
490			{
491	michael	2646	printf("ircd: version %s(%s)\n", ircd_version, serno);
492	adx	30	exit(EXIT_SUCCESS);
493			}
494
495			if (chdir(ConfigFileEntry.dpath))
496			{
497			perror("chdir");
498			exit(EXIT_FAILURE);
499			}
500
501	michael	1798	ssl_init();
502	adx	30
503			if (!server_state.foreground)
504			{
505			make_daemon();
506			close_standard_fds(); /* this needs to be before init_netio()! */
507			}
508			else
509			print_startup(getpid());
510
511			setup_signals();
512
513			/* Init the event subsystem */
514			eventInit();
515	michael	2253
516	adx	30	/* We need this to initialise the fd array before anything else */
517			fdlist_init();
518	michael	1831	log_set_file(LOG_TYPE_IRCD, 0, logFileName);
519	adx	30	check_can_use_v6();
520	michael	2632	init_netio(); /* This needs to be setup early ! -- adrian */
521	michael	2253
522	adx	30	/* Check if there is pidfile and daemon already running */
523			check_pidfile(pidFileName);
524
525	michael	1654	mp_pool_init();
526	adx	30	init_dlink_nodes();
527	michael	2159	init_isupport();
528	adx	30	dbuf_init();
529	michael	1798	hash_init();
530	adx	30	init_ip_hash_table(); /* client host ip hash table */
531			init_host_hash(); /* Host-hashtable. */
532	michael	1798	client_init();
533	michael	1632	class_init();
534	michael	1358	whowas_init();
535	michael	876	watch_init();
536	michael	1798	auth_init(); /* Initialise the auth code */
537	michael	998	init_resolver(); /* Needs to be setup before the io loop */
538	michael	1404	modules_init();
539	adx	30	read_conf_files(1); /* cold start init conf files */
540			init_uid();
541			initialize_server_capabs(); /* Set up default_server_capabs */
542			initialize_global_set_options();
543	michael	1798	channel_init();
544	michael	2216	read_links_file();
545	michael	2150	motd_init();
546	michael	1858	#ifdef HAVE_LIBGEOIP
547			geoip_ctx = GeoIP_new(GEOIP_MEMORY_CACHE);
548			#endif
549	adx	30
550	michael	1115	if (EmptyString(ServerInfo.sid))
551	adx	30	{
552	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
553	adx	30	exit(EXIT_FAILURE);
554			}
555	michael	885
556	michael	1115	strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
557
558			if (EmptyString(ServerInfo.name))
559			{
560	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
561	michael	1115	exit(EXIT_FAILURE);
562			}
563
564	adx	30	strlcpy(me.name, ServerInfo.name, sizeof(me.name));
565
566			/* serverinfo{} description must exist. If not, error out.*/
567	michael	1115	if (EmptyString(ServerInfo.description))
568	adx	30	{
569	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
570	adx	30	exit(EXIT_FAILURE);
571			}
572	michael	885
573	adx	30	strlcpy(me.info, ServerInfo.description, sizeof(me.info));
574
575	michael	1241	me.from = &me;
576			me.servptr = &me;
577			me.localClient->lasttime = CurrentTime;
578			me.localClient->since = CurrentTime;
579			me.localClient->firsttime = CurrentTime;
580	adx	30
581			SetMe(&me);
582			make_server(&me);
583
584	michael	1115	hash_add_id(&me);
585	adx	30	hash_add_client(&me);
586	michael	2916
587	adx	30	/* add ourselves to global_serv_list */
588			dlinkAdd(&me, make_dlink_node(), &global_serv_list);
589
590	michael	1622	load_kline_database();
591			load_dline_database();
592			load_gline_database();
593			load_xline_database();
594			load_resv_database();
595
596	adx	30	if (chdir(MODPATH))
597			{
598	michael	1247	ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
599	adx	30	exit(EXIT_FAILURE);
600			}
601
602			load_all_modules(1);
603			load_conf_modules();
604			load_core_modules(1);
605	michael	1115
606	adx	30	/* Go back to DPATH after checking to see if we can chdir to MODPATH */
607	michael	1115	if (chdir(ConfigFileEntry.dpath))
608			{
609			perror("chdir");
610			exit(EXIT_FAILURE);
611			}
612	michael	1121
613	adx	30	/*
614			* assemble_umode_buffer() has to be called after
615			* reading conf/loading modules.
616			*/
617			assemble_umode_buffer();
618
619			write_pidfile(pidFileName);
620
621	michael	1247	ilog(LOG_TYPE_IRCD, "Server Ready");
622	adx	30
623			eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
624			eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);
625
626			/* We want try_connections to be called as soon as possible now! -- adrian */
627			/* No, 'cause after a restart it would cause all sorts of nick collides */
628			eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
629
630			/* Setup the timeout check. I'll shift it later :) -- adrian */
631			eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
632
633	michael	1625	eventAddIsh("save_all_databases", save_all_databases, NULL, DATABASE_UPDATE_TIMEOUT);
634
635	adx	30	if (ConfigServerHide.links_delay > 0)
636			eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
637			else
638			ConfigServerHide.links_disabled = 1;
639
640			if (splitmode)
641			eventAddIsh("check_splitmode", check_splitmode, NULL, 60);
642
643			io_loop();
644	michael	885	return 0;
645	adx	30	}